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CRITICAL severity

CVE-2021-37404 — hadoop-common

CRITICAL

CVE-2021-37404 is a critical-severity (CVSS 9.8) Out-of-bounds Write vulnerability in org.apache.hadoop:hadoop-common. A fix is available for org.apache.hadoop:hadoop-common — see the affected versions and patch details below.

Apache Hadoop heap overflow before v2.10.2, v3.2.3, v3.3.2

Also known asGHSA-rmpj-7c96-mrg8
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.1%probability of exploitation in next 30 days
Lower Risk+0.12%
Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk
0.68%1.70%2.72%3.74%1.5%3.1%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected
☕org.apache.hadoop:hadoop-common☕org.apache.hadoop:hadoop-common☕org.apache.hadoop:hadoop-common

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

There is a potential heap buffer overflow in Apache Hadoop libhdfs native code. Opening a file path provided by user without validation may result in a denial of service or arbitrary code execution. Users should upgrade to Apache Hadoop 2.10.2, 3.2.3, 3.3.2 or higher.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.hadoop:hadoop-common≥ 3.3.0&&< 3.3.23.3.2org.apache.hadoop:hadoop-common:3.3.2
☕Mavenorg.apache.hadoop:hadoop-common≥ 3.0.0&&< 3.2.33.2.3org.apache.hadoop:hadoop-common:3.2.3
☕Mavenorg.apache.hadoop:hadoop-commonall versions2.10.2org.apache.hadoop:hadoop-common:2.10.2

Affected Products

1 product · 4 configurations
Application
hadoopapache
≥ 3.3.0 && ≤ 3.1.4
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.hadoop:hadoop-common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.hadoop:hadoop-common to 3.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-37404 is resolved across your whole dependency graph.

  3. Workarounds

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Frequently Asked Questions

There is a potential heap buffer overflow in Apache Hadoop libhdfs native code. Opening a file path provided by user without validation may result in a denial of service or arbitrary code execution. Users should upgrade to Apache Hadoop 2.10.2, 3.2.3, 3.3.2 or higher.
O3 Security · Impact-Aware SCA

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CVE-2021-37404: hadoop-common RCE — Fixed in 3.3.2